Grade 8.8Allen Bolts are a type of fastener characterized by a hexagonal socket in the head. They have a distinctive head with a hexagonal socket and allow for the use of an Allen wrench or hex key for installation and removal. This may have various coatings or finishes for corrosion resistance. Common coatings include zinc plating, black oxide, or other corrosion-resistant finishes. They are widely used in a variety of applications where a secure and low-profile fastening solution is needed. Grade 8.8 Allen Bolts are available with various thread types, including coarse threads and fine threads. The thread type should match the corresponding nuts or threaded holes.